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参数资料
| 型号： | MAX17100ETM+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/35页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INT-SWITCH 48-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | LCD 电视机/监控器 |
| 电源电压： | 2.5 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
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Internal-Switch Boost Regulator with Integrated Scan
Driver, VCOM Calibrator, and Op Amp for TFT LCDs
Pin Description (continued)
PIN
27, 29,
31
28, 30,
32
33
34
35
36
NAME
POS_
OUT_
VCOM
COMFB
SUP
OGND
FUNCTION
Operational Amplifier Noninverting Input
Operational Amplifier Output. OUT_ is high impedance in shutdown.
VCOM Buffer Operational Amplifier Output
VCOM Buffer Operational Amplifier Inverting Input
Operational Amplifier Supply Input. Typically connected to the output of the step-up regulator (V MAIN ) and
bypass to OGND with a 0.47μF capacitor.
Analog Ground for Operational Amplifiers. Connect to power ground (PGND) underneath the IC.
37
COMADJ VCOM Buffer Operational Amplifier Noninverting Input
38
39
RSET
WR
Full-Scale Sink-Current Adjustment Input. Connect a resistor, R RSET , from RSET to AGND to set the full-
scale adjustable sink current I OUT , which is V SUP /(20 x R RSET ). I OUT is equal to the current through R RSET .
Serial Write-Protect Input. When WR is high, I 2 C write commands to update nonvolatile memory are ignored.
40
SCL
Seria Interface Clock Input. Connect a 5.6k
pullup resistor to IN.
41
SDA
Seria Interface Data I/O. Output is open drain. Connect a 5.6k
pullup resistor to IN.
IN Supplies the Internal Reference and Other Internal Circuitry. Connect IN to the input supply voltage and
43
44
45
46
47
48
—
IN
GATE
LX
PGND
RST
FB
EP
bypass IN to AGND with a minimum 1μF ceramic capacitor. It is important for the loop area between the IC
and the bypass capacitor, and the trace length connecting the bypass capacitor to be minimized.
External p-Channel MOSFET Gate Drive. It is high to keep the switch off during fault condition, including
output overload, short circuit, FB fault latch, and thermal protection. Leave the pin unconnected if the
external pFET is not placed.
Step-Up Regulator Switching Node. Connect inductor and boost diode here and minimize trace area for
lowest EMI.
Power Ground
Reset Function Output
Step-Up Regulator Feedback Input. FB regulates to 1.233V. Connect FB to the center of a resistive voltage-
divider between the step-up regulator output and AGND to set the regulator ’s output voltage. Place the
resistive voltage-divider within 5mm of FB.
Exposed Pad. Connect EP to AGND.
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